Lubricating system.



P. DAIMLER.

LUBRIGATING SYSTEM.

APPLICATION FILED SEPT. 4, 1907.

1,01 3,644. Patented Jan. 2, 1912.

5 SHEETS-SHEET 1.

j?? arziar s P. DAIMLER.

LUBBICATING SYSTEM.

APPLIoATIoN FILED snP'r. 4, 1907.

Patented Jan. 2, 1912.

5 SHEETS-SHEET 2.

HIIIHIH! P. DAIMLER.

LUBRICATING SYSTEM.

APPL1GA-TI0N FILED SEPT. 4, 1907.

Patented J an. 2, 1912.

l5 SHEETS-SHEET 3.

P. DAIMLER.

LUBRICATING SYSTEM.

vAPPLIUATION FILED SEPT. 4, 1907.

Patented J an. 2, 1912.

5 SHEETS-SHEET 4,

. P. DAIMLER.

LUBRIOATING SYSTEM.

APPLICATION FILED SEPT. 4, 1907. 1,01 3,644, Patented Jan, 2, 1912..

sunnita-unir s. u

' exact specification.

y UNITED STATES' PATENT orricn.

PAUL DAIMLER, OF UNTERTRXHEI, GERMAN Y, ASSIGNOE T0 THE FIRM 0F DAIMLERLIOTOBENGESELLSCHAFT, 0F UNTEBTBKHEIM, GERMANY.

LUBBICATING SYSTEM.'

To all whom it may concern:

Be it known that I, PAUL' DAIMLER, a subject ofthe King of -Wrttemberg,and resident of Untertrkheim, in the Kingdom of Wrttemberg, GermanEmpire, have invented a certain" new and useful Lubricating System, ofwhich the following is an This invention relates to a lubricating deviceor system such as is used with multiple cylinder engines where the.crank pit of the engine receives the waste oil which is sub- .sequentlydrawn from saidcrank pit passedv 16 l be used. In such apparatus it isextremely through a iilter and forced again into the parts of the enginein which it is desired to desirable that separate pumps should be usedfor operatin upon the waste oil and the filtered cooled and purifiedoil. The pump operating upon the waste oil is naturally of large sizeand the parts are thereby notso liable to be choked by means ofimpurities passing through the pump.

According to the present invention a waste oil' pump is employed fordrawing off the waste 4oil andfforcing the Asame into a cooler andpurifier from which itis drawn 'by means of a smaller clean oil pump anddelivered intol a separate tank'whence it is withdrawn and distributedto the various points to be lubricated by one or morelubrieating pumps,all of said pumps being preferably controlledv by means of a commonrotary valve.

In the accompanyin drawings which illustrate-one suitable orm of thepresent invention, Figure 1 is a ypartial cross secil tion throughanengine frame provided with a lubricator device according to thepresent invention. Fig. 2 is a section on a line 2 2 of Fig. 1 with thepipes removed, Fig. 3 is a section on a line 3-3 of Fig. 1 with thepipes'removed, Fig. 4.is an outside view of the common rotary valve,Fig. 5 is a developmentof the valve surface showing the shape of theports. Fig. 6 is a plan partly in section of the lubricating device,Fig. 7

is a section` on the line VII-VII of Fig. 6, Fig. 8 is a section on theline VIII-VIII of Fig. 6, Fig. 9 is a section on the lines IX-IX of Fig.6, and Fig. 10 shows 'in somewhat diagrammatic view the course o t theflow of the oil in its circuit.

Referring to the drawin a shaft a. driven byv means of a wheel b 1sprovided with Speeication of Letters latent. Application led September4, 1907. Serial No'. 391,317.

" Patented Jan. 2,1912.

positely -arranged with their narrowends toward one another, the lefthand part Fi'g. 4 being shown as provided with a pro- .jection hengaging in a recessed boss j. on the rlght hand part. The two halvesare drawn toward one another and against the tapered walls of the valve`casing vby means of a spring k. The gearjwheels f and g are proportionedso as to cause the rotary valve lz. to rotate once for each tworotations of the shaft a. The valve parts L are each provided with asetof two L-shaped grooves m n. The parts m being arrangedcircumferentially while the parts n are arranged axlally. Thegrooves n'extend on opposite sides of the oove parts m so as to register with twodi erent sets of delive ports o and o arranged one on each si e of thecentral plane of each of the pumps d. One groove in a set thereforefirst serves on the suction stroke of a pump d to connect a suction portd with a passage d2 leading to the 'barrel of the corresponding pump dand then serves'to connect the passage d2 with each of the deliveryports in a set-o on the delivery stroke of the same pump yWhile theother groove in the same set performs the same functions but withrespect to the other set of delivery ports o.

`O11 each outer extremity of the conical parts of the valve t there areprovided two further grooves p which are arranged in one plane andcontrol lthe operation of the pumps gy -and 1- respectively, being eachadapted to connect the passage g2 or r2 leading to the barrel ofthe pumpg or r with the corresponding suction port g or r and correspondingdelivery port g or r3. The pump r is made larger than the pump g and isarranged to draw waste oil from the crank chambers through -a pipeconnected to the suction port r suitable height so as to preserve therequired depth of oil in the bath s. The force pump r delivers 'thewasteoil through a pipe la connected to the deliveryport r3 into a cooler andfilter w.4 From the cooler and filter w purified and cooled oil isdrawn, through a pipe connected to the suction port g', by

and arranged at a means of the pump lq, from which ,it is deliveredthrough a pipe wf connected tothe delivery port g into the tank sformedjin 'the base platefof'theengine. Thev pipe m" may be extendedsoas to conduct the oil tov other tanks if desired 'as shown atx/v2. The

,oil is withdrawn froml the tank s through ppes-zconnected to the-suction ports d y l .the two pumps'd, d, and distributed thereby *i jo.for the twopum'ps d comprises' three such ports. `The number in each setmay. be 1n` creased'or diminished as required.l It is obviousalsofthatthe number of, pumpsd maybe varied. With this arrangement thewaste oil in the crank chamber s is first' emoved therefrom down to apredetermined levelv by the pump r 4and forced into the cooler and-filter w -as .diagrammatically Ishown in-Fig. 10. After passing throughthe cooler andfilter 'w it -is transferred by the pump Q to the cleanoil tank s', whence it is again transferred by the two pumps d d" to thepoints to be lubricated through -the two sets of deliveryv ports o' ando.

I claim:

combination a pump for drawing ofi' waste oil, a cooler and ilter intowhichfsaid pump discharges said Waste oil, avsmaller pump pumping thecooled and purified oil'to the machine parts and a common rotary valvecontrolling said pumps.l I -2. A lubricatmg device. lcomprising incombination a pump drawing off waste oil, a cooler and purifier intowhich said pump discharges said waste oil, a smaller pump for. taklngthe oil from the purifier, distributin pumps driven from the same shaftasl said rst mentioned pumpand adapted to deal only with urified 011,and a common rotary distributing valve for said pumps, substantially asdescribed.

/ 3. A lubricating device comprising in combination a pump for drawingoii waste oil, a cooler and filter into which said 'pump discharges saidwaste oil,l distributing pumps for distributing purified oil to therequlred parts of the engine, a common drivingshaft for all said pumps,a common rotary valve for all said pumps, driving gearing from saiddriving shaft to said rot-ary valve.

4. -A lubricating device foruse in engines comprising in combinationwith the engine frame and crank pit, a waste oil pipe leading from themaximum oil level in saidcrank pit, a pump with'which said Waste oilpipev connects, a filter and cooler into which said pump discharges, asmaller pump pumping the cooled and purified oil to the machine parts, acommon rotary con- 'and cooled ,from sai discharging the cleanedand'cooled oil into pumps, substantially discharging'thecleaned andcooled oil into said tank and means for removing the .cleaned and cooledoil from saidtank and distributing the same to the points; to belubricated.`

6. 'A lubricating device lcomprising in ,combination a cooler andfilter, a pump for 4drawing off .waste oil, land discharging it into.said cooler and lter, a cleanoil tank,

a pump for removin the oil whencleaned cooler and filter and said tank,a pump for removing the cleaned and cooled oil from said tank anddistributing the same to the points to be lubricated and a rotarydistributing valve common' to the said three pumps.

v 7. A lubricating. device comprising in combination a cooler andfilter, a pump for drawing oif waste oil, and discharging it L `intosaid cooler and filter, a clean oil tank, 1. A lubricating devicecomprising 1nV lsaid tank, a pump for removing the cleaned and cooledoil from said tank and distributing ,the same to the points to belubricated,

va rotary distributing valve common to the said three pumps, a drivingshaft common to the said vthree pumps and means operated by said shaftfor rotating said valve.

8. A lubricating device comprising in combination a cooler and filter, aWaste oil pump adapted to draw oif waste oil and discharge it into saidcooler and ilter, a clean oil tank, a clean oilpump for removing the oilfrom said cooler and filter and discharging it into said tank, alubricating pump for distributing the clean oil from said tank, a rotaryvalve casing, a passage in said casing leading to each of said pumps, asuction port in said casing for each of said pumps, a

a pump for removing"A the oil when cleaned and cooled from 4said coolerand filter and a /9. A lubricating device comprising in I combination acooler and filter, a waste oil pump adapted to draw off waste oil anddischarge it into said cooler and filter, a clean oil tank, a clean oilpump for removing the oil from'said cooler and iilter and discharging it-into said tank, a lubricating pump for distributing the clean oil fromsaid tank, a rotary valve casing, a passage in said casing leading toeach of said pumps, a suction port in said casing foreach of` saidpumps, a delivery port in said casing for said waste oil pump and forsaid clean oil pump, a plurality of delivery ports in said casing forsaid lubricating pump, a rotary valve in said casing adapted to connectsaid passage of said waste oil pump and of said.

discharge it into said cooler and filter, a

clean oil tank, a clean oil pump for removing the oil from said coolerand filter and discharging it into said tank, a lubricating pump fordistributing the clean oil from said tank, a rotary vvalve casing, apassage in said casing leading to each of said pumps, a suction port insaid casing for each of said pumps, a delivery port 1n said casing forsaid waste oil pump and for said clean oil pump, a plurality of deliveryports arranged in said casing on either side of said lubricating pump, arotary valve in said Y. casing adapted during one revolution to twiceconnect alternately said passage of said waste-oil pump and of the saidclean oil pump with the corresponding suction port and delivery port andto connect the said passage of said lubricating pump rst alternatelywith the corresponding suction port and each in succession of thedelivery ports arranged on one side of said lubricating pump and thenalternately with the same suction port and each in succession of thedelivery ports arranged on the other side of said lubricating pump,means for operating said pumps and means for rotating said valve oncefor each two reciprocations of said pumps.

11. In a lubricating device the combination with circulating anddistributing pumps of an oppositely coned valve casing, a transverselydivided correspondingly conedvalve in said casing adapted to act asdistributer for each of said pumps, means for insuring simultaneousrotation of the two portions of said valve, a spring tending to draw thetwo portions of said valve together and into contact with said casingand means for rotating said valved portions.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

PAUL DAIMLER.

Witnesses ROBERT UHLAND, ERNEST ENTENMANN.

